Publications by authors named "Fuguo Peng"
Article Synopsis
- Back contact silicon solar cells eliminate grid lines, enhancing their aesthetic for use in buildings, vehicles, and aircrafts while allowing for self-power generation.
- New laser techniques improve the production process, achieving the first silicon solar cell with over 27% efficiency by using hydrogenated amorphous silicon for surface passivation and implementing a unique dense passivating contact.
- The approach significantly reduces processing time and includes the development of indium-less cells at 26.5% efficiency and silver-free cells at 26.2%, supporting the growing demand for solar technology in various applications.
Article Synopsis
- Researchers created advanced two-terminal monolithic perovskite/silicon tandem solar cells, achieving higher power conversion efficiency than single-junction solar cells.
- They addressed the challenge of reducing interfacial recombination by developing a unique bilayer passivation strategy using lithium fluoride and diammonium diiodide, which improved charge extraction and reduced energy loss.
- The improved tandem cells demonstrated a certified power conversion efficiency of 33.89%, surpassing the single-junction Shockley-Queisser limit and achieving strong performance metrics such as an open-circuit voltage of 1.97V.
Silicon solar cells are a mainstay of commercialized photovoltaics, and further improving the power conversion efficiency of large-area and flexible cells remains an important research objective. Here we report a combined approach to improving the power conversion efficiency of silicon heterojunction solar cells, while at the same time rendering them flexible. We use low-damage continuous-plasma chemical vapour deposition to prevent epitaxy, self-restoring nanocrystalline sowing and vertical growth to develop doped contacts, and contact-free laser transfer printing to deposit low-shading grid lines.
View Article and Find Full Text PDFThe interfacial morphology of crystalline silicon/hydrogenated amorphous silicon (c-Si/a-Si:H) is a key success factor to approach the theoretical efficiency of Si-based solar cells, especially Si heterojunction technology. The unexpected crystalline silicon epitaxial growth and interfacial nanotwins formation remain a challenging issue for silicon heterojunction technology. Here, we design a hybrid interface by tuning pyramid apex-angle to improve c-Si/a-Si:H interfacial morphology in silicon solar cells.
View Article and Find Full Text PDF